Microondes Energie Systemes

Centre National De La Recherche Scientifique

Elf Atochem S.a.

Regie Nationale Des Usines Renault

Solufrance

Andre-Jean Berteaud

Alain Germain

Jean-Luc Perillon

Daniel Cuzin

Gerard Renevot

Michel Ollivon

Francois Galtier

Rene Clement

A process for controlling the microwave heating of a product to a temperature which is higher than or equal to a determined temperature for a period which is longer than or equal to a determined period, a marking support and a receptacle for product intended for such a control. Measurement is made of the resistivity of a thermally crosslinkable ink filled with conductive particles, with which the product or the receptacle containing the product has been previously marked and the resistivity of which is arranged to decrease in a predetermined manner in relation to the temperature and the period of microwave heating. The invention is applicable especially to the control of the sterilization of a pharmaceutical or agri-foodstuff product.

Device for the control and detection of adequate heat levels in

A microwave applicator device for the treatment of sheet or lap products comprising a housing defining a parallelepipedal waveguide cavity with dimensions a.times.b.times.L in an orthogonal coordinate system Ox, Oy, Oz, the housing being aligned along Oz and provided with slots for passing the product to be treated into the cavity along a plane parallel to the Ox, Oz plane, and means a microwave generator for exciting the cavity in Transverse Electric Mode, in order to create an electric field (E) internal to the cavity along a direction substantially parallel to Ox. The housing is such that the dimension a of the cavity is greater than a value substantially equal to the dimension b of the cavity.

Microwave applicator device for the treatment of sheet or lap products

A composite material comprising a substrate which is not or very slightly excitable by microwaves and a coating on at least a portion of said substrate based on polymeric composition containing at least 50% by weight of a polymer excitable by microwaves, wherein the melting point of the substrate is lower than the film-formation temperature of the polymeric composition and the process of making such composite.

Composite material comprising a substrate and a polymeric based coating

Device for microwave elimination of particles contained in the exhaust gases of diesel engines in which a microwave (.lambda.) source (6) and a conductor (5) of the electromagnetic field generated by the source is joined with a resonator (2 or 3) mounted on an element of the pipe (12) for the exhaust gases which contains an insert, characterized by the fact that the insert consists of a filter (13) whose upstream and downstream ends are offset toward the inside of the cavity defined by the resonator and delimit two chambers (14, 15) in which conductors (4) of the electromagnetic field come out, respectively.

Device for microwave elimination of carbon particles contained in

The method comprises the following steps: depositing the coating (20) to be treated on a first face (11) of the dielectric support (10); depositing a layer (30) of electrically conductive material on a second face (12) of the dielectric support (10) opposite to the first face and generally parallel thereto, the thickness of said layer (30) being of the same order as the penetration depth .delta. in the material thereof of the selected electromagnetic wave; and applying microwave energy to the assembly thus constituted in such a manner that the direction of vibration of the electric field is substantially parallel to the coating (20) to be treated and to the layer (30) of conductive material.

Growing community of inventors

Draveil, France

Andre-Jean Berteaud